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TCA9406 双路双向 1MHz I2C 总线和 SMBus 电压电平转换器

The TCA9406 is a dual bidirectional I2C-Bus and SMBus Voltage-Level translator with enable (OE) Input. It is operational from 1.65 V to 3.6 V on A-Port and 2.3 V to 5.5 V on B-port. Enable (OE) input is referenced to VCCA with a maximum input voltage tolerance of 4.6 V.

The TCA9406 can operate up to 24Mbps in push pull mode and 2Mbps with open drain mod. Its compatible with a standard I2C bus 100 kHz, 400 kHz and 1 MHz at both sides of A-Port and B-Port.

With the standard I2C bus system, it needs pull-up resistors to provide logic HIGH levels on the translator bus. The TCA9406 is an open-drain bus level configuration of the I2C-bus. The value of pullup resistors depends on the system, but each side of the translator must have pull-up resistors and TCA9406 already has 10 k pullup resistors on each side and it allows to add additional external pull-up resistors

	TCA9406
No. of Outputs	2
Operating Temperature Range(°C)	-40 to 85
Rating	Catalog
VCC(Min)(V)	-0.5
VCC(Max)(V)	4.6
Pin/Package	8DSBGA, 8SM8, 8US8
Max Frequency(kHz)	1000
Function	I2C Voltage Level Translator
Vcc range(V)	1.65 to 3.6
Enable Pin	Yes
Open–Drain I/O Type	Yes
5V Tolerant I/O	Yes
Push–Pull I/O Type	Yes

TCA9406 特性

• 2-Bit Bidirectional Translator for SDA and SCL Lines in Mixed-Mode I2C Applications
• Lock-Up Free for Bus Isolation when OE Control Pin referring to VCCA with 5-V Input Tolerant
• Level Translation Range
  • 1.8 V to 2.5 V/3.3 V/5 V
  • 2.5 V to 2.5 V/3.3 V/5 V
  • 3.3 V to 3.3 V/5 V
• Internal10-k Pullup Resistor on Each Port and Option to Add External Pullup Resistor if Required
• Provides Bidirectional Voltage Translation With No Direction Pin
• Ioff Support Partial Power Down (VCC= 0 V) With 2 mA
• High-Impedance Output SCL1, SDA1, SCL2, and SDA2 Pins When OE = Low or VCC= 0 V
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • A Port
    • 2500-V Human-Body Model (A114-B)
    • 250-V Machine Model (A115-A)
    • 1500-V Charged-Device Model (C101)
  • B Port
    • 8-kV Human-Body Model (A114-B)
    • 250-V Machine Model (A115-A)
    • 1500-V Charged-Device Model (C101)

TCA9406 芯片订购指南

器件	状态	温度	价格	封装 | 引脚	封装数量 | 封装载体	丝印标记
TCA9406DCTR	ACTIVE	-40 to 85	0.38 | 1ku	SM8 (DCT) | 8	3000 | LARGE T&R
TCA9406DCUR	ACTIVE	-40 to 85	0.38 | 1ku	US8 (DCU) | 8	3000 | LARGE T&R
TCA9406YZPR	PREVIEW	-40 to 85		DSBGA (YZD) | 8	3000

TCA9406 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
TCA9406DCTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TCA9406DCTR	TCA9406DCTR
TCA9406DCUR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TCA9406DCUR	TCA9406DCUR

TCA9406 应用技术支持与电子电路设计开发资源下载

1. TCA9406 数据资料 dataSheet 下载.PDF
2. TI 德州仪器I2C 逻辑器件产品选型与价格 . xls
3. Logic Guide 2009 (PDF 4263 KB)
4. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
5. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
6. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
7. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
8. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
9. Designing With Logic (PDF 186 KB)
10. Live Insertion (PDF 150 KB)
11. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
12. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
13. HiRel Unitrode Power Management Brochure (PDF 206 KB)
14. LOGIC Pocket Data Book (PDF 6001 KB)
15. HiRel Unitrode Power Management Brochure (PDF 206 KB)
16. Logic Cross-Reference (PDF 2938 KB)